/* ========================================
   ANDALVERA - Bio-Neon Unique Design
   Completely custom modern stylesheet
   No frameworks, pure CSS for uniqueness
   ======================================== */

:root {
  --bg: #020617;
  --surface: #0F172A;
  --surface-2: #1E293B;
  --surface-3: #334155;
  --accent: #4ADE80;
  --accent-2: #67F6FF;
  --accent-3: #F472B6;
  --accent-4: #A3E635;
  --text: #F8FAFC;
  --text-muted: #94A3B8;
  --text-light: #CBD5E1;
  --border: #475569;
  --success: #4ADE80;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.4);
  --shadow-neon: 0 0 15px rgba(74, 222, 128, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'system-ui', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.875rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

p {
  margin-bottom: 1.25rem;
  color: var(--text-light);
}

a {
  color: var(--accent-2);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent);
}

/* Layout & Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }
}

/* Header & Navigation - Unique sticky with glass effect */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(2, 6, 23, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-light);
  position: relative;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent);
  color: var(--bg) !important;
  padding: 0.6rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(74, 222, 128, 0.3);
}

.nav-cta:hover {
  background: var(--accent-2);
  color: var(--bg) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(103, 246, 255, 0.4);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .hamburger {
    display: flex;
  }
}

/* Hero Section - Bio Neon Dramatic */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #020617 0%, #0F172A 50%, #020617 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(circle, rgba(74,222,128,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 5rem);
  line-height: 1.05;
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.hero .subtitle {
  font-size: 1.35rem;
  color: var(--text-light);
  margin-bottom: 2.5rem;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.25rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 9999px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 10px 25px -5px rgba(74, 222, 128, 0.4);
}

.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-3px);
  box-shadow: 0 15px 35px -5px rgba(103, 246, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(74, 222, 128, 0.05);
}

/* Cards - Unique Bio Neon Cards */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: var(--shadow), var(--shadow-neon);
}

.card-accent {
  height: 6px;
  width: 100%;
}

.card-body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.card p {
  flex: 1;
  font-size: 0.975rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.card-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.read-more {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.95rem;
}

.read-more:hover {
  gap: 0.75rem;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

@media (max-width: 640px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Sidebar */
.sidebar {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border);
  position: sticky;
  top: 100px;
}

.sidebar h4 {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.category-list {
  list-style: none;
}

.category-list li {
  margin-bottom: 0.6rem;
}

.category-list a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-light);
  padding: 0.5rem 0;
  font-size: 0.95rem;
}

.category-list a:hover {
  color: var(--accent);
  padding-left: 0.25rem;
}

.category-list .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Forms - Unique pill style */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

input, textarea, select {
  width: 100%;
  padding: 0.9rem 1.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  transition: var(--transition);
  font-family: inherit;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.1);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  margin-top: 0.5rem;
}

/* Newsletter in sidebar */
.newsletter {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.newsletter p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Long content pages - Privacy, Terms */
.policy-content {
  max-width: 820px;
  margin: 0 auto;
}

.policy-content h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

.policy-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.policy-content ul, .policy-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.policy-content li {
  margin-bottom: 0.6rem;
  color: var(--text-light);
}

.disclaimer {
  background: var(--surface);
  border-left: 5px solid var(--accent-3);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem;
}

/* Thank you page */
.thankyou-hero {
  text-align: center;
  padding: 6rem 0 4rem;
}

.thankyou-hero h1 {
  color: var(--accent);
}

/* Footer */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.footer-brand {
  font-weight: 700;
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.footer-brand span {
  color: var(--accent);
}

.footer-links a {
  display: block;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* Utility */
.text-center { text-align: center; }
.mt-8 { margin-top: 2rem; }
.mb-8 { margin-bottom: 2rem; }
.gap-6 { gap: 1.5rem; }

/* Article full content on main for text volume */
.article-full {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  border: 1px solid var(--border);
}

.article-full h3 {
  color: var(--accent-2);
  margin-bottom: 1.5rem;
}

.article-full p {
  font-size: 1.02rem;
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  
  .btn {
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
  }
}